|Publication number||US7040040 B2|
|Application number||US 10/881,395|
|Publication date||May 9, 2006|
|Filing date||Jun 30, 2004|
|Priority date||Aug 17, 1993|
|Also published as||US5918384, US6050002, US6195916, US6324772, US6604300, US6962009, US6966129, US6966130, US6968635, US6996923, US6996924, US7040041, US7043857, US7069671, US7076892, US7114269, US7380350, US20020116842, US20030192203, US20040231192, US20040231193, US20040231194, US20040231195, US20040231198, US20040231199, US20040237342, US20040237344, US20040237345, US20040237347, US20040244222, US20060117602|
|Publication number||10881395, 881395, US 7040040 B2, US 7040040B2, US-B2-7040040, US7040040 B2, US7040040B2|
|Inventors||David F. Meschan|
|Original Assignee||Akeva L.L.C.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (113), Non-Patent Citations (33), Referenced by (12), Classifications (31), Legal Events (9)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This is a continuation of application Ser. No. 10/447,003, filed May 28, 2003 pending; which is a continuation of application Ser. No. 10/007,535, filed Dec. 4, 2001, now U.S. Pat. No. 6,604,300; which is a continuation of application Ser. No. 09/641,148, filed Aug. 17, 2000, now U.S. Pat. No. 6,324,772; which is a continuation of application Ser. No. 09/512,433, filed Feb. 25, 2000, now U.S. Pat. No. 6,195,916; which is a continuation of application Ser. No. 09/313,667, filed May 18, 1999, now U.S. Pat. No. 6,050,002; which is a continuation of application Ser. No. 08/723,857, filed Sep. 30, 1996, now U.S. Pat. No. 5,918,384; which is a CIP of Ser. No. 08/291,945, filed Aug. 17, 1994, now U.S. Pat. No. 5,560,126; which is a CIP of Ser. No. 08/108,065, filed Aug. 17, 1993, now U.S. Pat. No. 5,615,497; all of which are incorporated herein by reference.
1. Field of the Invention
The present invention relates generally to an improved rear sole for footwear and, more particularly, to a rear sole for an athletic shoe with an extended and more versatile life and better performance in terms of cushioning and spring.
2. Description of the Prior Art
Athletic shoes, such as those designed for running, tennis, basketball, cross-training, hiking, walking, and other forms of exercise, typically include a laminated sole attached to a soft and pliable upper. The laminated sole generally includes a resilient rubber outsole attached to a more resilient midsole usually made of polyurethane, ethylene vinyl acetate (EVA), or a rubber compound. When laminated, the sole is attached to the upper as a one-piece structure, with the rear sole being integral with the forward sole.
One of the principal problems associated with athletic shoes is outsole wear. A user rarely has a choice of running surfaces, and asphalt and other abrasive surfaces take a tremendous toll on the outsole. This problem is exacerbated by the fact that most pronounced outsole wear, on running shoes in particular, occurs principally in two places: the outer periphery of the heel and the ball of the foot, with peripheral heel wear being, by far, a more acute problem. In fact, the heel typically wears out much faster than the rest of a running shoe, thus requiring replacement of the entire shoe even though the bulk of the shoe is still in satisfactory condition.
Midsole compression, particularly in the case of athletic shoes, is another acute problem. As previously noted, the midsole is generally made of a resilient material to provide cushioning for the user. However, after repeated use, the midsole becomes compressed due to the large forces exerted on it, thereby causing it to lose its cushioning effect. Midsole compression is the worst in the heel area, including the area directly under the user's heel bone and the area directly above the peripheral outsole wear spot.
Despite technological advancements in recent years in midsole design and construction, the benefits of such advancements can still be largely negated, particularly in the heel area, by two months of regular use. The problems become costly for the user since athletic shoes are becoming more expensive each year, with some top-of-the-line models priced at over $150.00 a pair. By contrast, with dress shoes, whose heels can be replaced at nominal cost over and over again, the heel area (midsole and outsole) of conventional athletic shoes cannot be. To date, there is nothing in the art that successfully addresses the problem of midsole compression in athletic shoes, and this problem remains especially severe in the heel area of such shoes.
Another problem is that purchasers of conventional athletic shoes cannot customize the cushioning or spring in the heel of a shoe to their own body weight, personal preference, or need. They are “stuck” with whatever a manufacturer happens to provide in their shoe size.
Finally, there appear to be relatively few, if any, footwear options available to those persons suffering from foot or leg irregularities, foot or leg injuries, and legs of different lengths, among other things, where there is a need for the left and right rear soles to be of a different height and/or different cushioning or spring properties. Presently, such options appear to include only custom-made shoes that are prohibitively expensive and rendered useless if the person's condition improves or deteriorates.
The present invention is directed to a shoe that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the shoes and shoe systems particularly pointed out in the written description and claims, as well as the appended drawings.
To achieve these and other advantages and in accordance with one embodiment of the invention, as embodied and broadly described herein, the shoe includes an upper having a heel region, a rear sole secured below the heel region of the upper, and a rear sole support attached to the upper and configured to secure the rear sole below the heel region of the upper. The rear sole support includes a flexible region positioned below the heel region of the upper and above a portion of the rear sole. The flexible region is sufficiently stiff to support a user while still being sufficiently flexible to flex and spring when the user runs or walks vigorously. The flexible region has an interior portion which in its normal, unflexed state is spaced upwardly from the portion of the rear sole immediately below said interior portion, the interior portion being adapted to flex in a direction substantially perpendicular to the major longitudinal axis of the shoe as it is used.
The interior portion of the flexible region preferably is elevated relative to its peripheral portion in a direction toward the heel region of the upper. In certain embodiments the flexible region is an integral part of the rear sole support. The rear sole support may include an integral arch extension extending below the upper from a position proximate the heel region of the upper through a substantial portion of the arch region of the upper to support the arch region. The flexible region may be used with permanently attached rear soles.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate several embodiments of the invention and together with the description, serve to explain the principles of the invention.
Reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference characters will be used throughout the drawings to refer to the same or like parts.
Upper 120 may be composed of a soft, pliable material that covers the top and sides of the user's foot during use. Leather, nylon, and other synthetics are examples of the various types of materials known in the art for shoe uppers. The particular construction of the upper is not critical to the shoe of the present invention. It may even be constructed as a sandal or may be made of molded plastic, integral with the rear sole support, as in the case of ski boots or roller blade uppers.
Forward sole 160 is attached to upper 120 in a conventional manner, typically by injection molding, stitching, or gluing. Forward sole 160 typically includes two layers: an elastomeric midsole laminated to an abrasion-resistant outsole. The particular construction of the forward sole is not critical to the invention and various configurations may be used. For example, the midsole may be composed of material such as polyurethane or ethylene vinyl acetate (EVA) end may include air bladders or gel-filled tubes encased therein (shown in the area of the dotted line in FIG. 1), and the outsole may be composed of, by means of example only, an abrasion-resistant rubber compound.
Rear sole support 140 is also attached to the heel region of upper 120 in a conventional manner, such as injection molding, stitching, or gluing. Rear sole support 140 is substantially rigid and is configured to stabilize the heel region of upper 120 and secure rear sole 150 below the heel region. As shown in
As shown in
In one embodiment of the present invention, shoe 100 also includes a rear sole 150 that is detachably secured to and/or rotatably positionable relative to rear sole support 140. Rear sole 150, as shown in
As shown in
In the embodiment shown in
The inside diameter of a circular recess 146, as measured between the inside surfaces of its sidewalls, or the distance between the inside surface of a medial sidewall and the inside surface of an opposite lateral sidewall in the case of a non-circular recess (not shown), may actually be greater than the width of the heel region of the shoe upper as measured from the exterior surface of the medial side of the heel region of the upper to the exterior surface of the lateral side of the heel region of the upper (i.e., the heel region of the upper at its widest point). This is possible because the material used to make the rear sole support 140 and side walls is sufficiently strong and durable to permit the side walls to “flare out” to a greater width than the heel region of the upper without risk of breakage. This in turn permits the use of a larger rear sole 150 with more ground-engaging surface and, hence, more stability. (As stated, the exterior walls of the lower portion of the rear sole generally align vertically with the exterior surface of the side walls forming the recess 146). It also permits the employment of a flexible region or member with a correspondingly larger diameter, width or length because its peripheral edges optimally should align vertically with the load-bearing side walls of the recess. Such a larger flexible region or member, with a diameter, width or length greater than the width of the heel region of the upper at its widest point, creates more cushioning and/or spring for the user's heel during the gait cycle. The observations and provisions contained in this paragraph are equally applicable to the embodiments described in
Rear sole 150 is preferably made from two different materials: an abrasion-resistant rubber compound for ground-engaging outsole 154; and a softer, more elastomeric material such as polyurethane or ethylene vinyl acetate (EVA) for midsole 158. However, rear sole 150 could be comprised of a single homogenous material, or two materials (e.g., EVA enveloped by hard rubber), as well as a material comprising air encapsulating tubes, for example, disclosed in U.S. Pat. No. 5,005,300. For each of the discussed rear sole embodiments, the outsole and midsole materials are preferably more resilient than materials used for the rear sole support or arch extension.
Detachability of rear sole 150 allows the user to change rear soles entirely when either the sole is worn to a significant degree or the user desires a different sole for desired performance characteristics for specific athletic endeavors or playing surfaces. The user can rotate the rear sole to relocate a worn section to a less critical area of the sole, and eventually replace the rear sole altogether when the sole is excessively worn. By periodically changing the position of the rear sole, more uniform wear and long life (both outsole and midsole) can be achieved. Additional longevity in wear may also be achieved by interchanging removable rear soles as between the right and left shoes, which typically exhibit opposite wear patterns.
In addition, some users will prefer to change the rear soles not because of adverse wear patterns, but because of a desire for different performance characteristics or playing surfaces. For example, it is contemplated that a person using the detachable rear sole embodiment of this invention in a shoe marketed as a “cross-trainer” may desire one type of rear sole for one sport, such as basketball, and another type of rear sole for another, such as running. A basketball player might require a harder and firmer rear sole for stability where quick, lateral movement is essential, whereas a runner or jogger might tend to favor increased shock absorption features achievable from a softer, more cushioned heel. Similarly, a jogger planning a run outside on rough asphalt or cement might prefer a more resilient rear sole than the type that would be suitable to run on an already resilient indoor wooden track. Rear sole performance may also depend on the weight of the user or the amount or type of cushioning desired.
The present invention in one embodiment includes a shoe or shoe kit which includes or can accept a plurality of rear soles 150 having different characteristics and/or surface configurations, thereby providing a cross trainer shoe. As explained in more detail below, the shoe can also be designed to accept and use different flexible members in the rear sole area, to achieve optimal flex and cushioning, through the combination of a flexible member and rear sole selected to provide the most desirable flex, cushion, wear, support, and traction for a given application. In a preferred embodiment, both the rear sole and the flexible member are replaceable and a given real sole can be locked in a plurality of separate positions relative to the recess in which it is held.
Since rear sole 150 shown in
Rotating the rear sole about an axis normal to the shoe's major axis to a position, for example, 180 degrees beyond its starting point, will locate the worn portion of the rear sole at or near the instep portion of the shoe. The instep portion is an area of less importance for tractioning, stability, cushioning and shock absorbing purposes. As long as the worn portion of the rear sole is rotated beyond the area of the initial heel strike, prolonged use of the rear sole is possible. The user can continue periodically to rotate the rear sole so that an unworn portion of the rear sole is located in the area of the first heel strike.
The shape of rear sole can be circular, polygonal, elliptical, “sand-dollar,” elongated “sand-dollar,” or otherwise. The shape of recess 146 is formed to be compatible with the shape of the rear sole. In all embodiments utilizing a detachable rear sole, the invention includes mechanical means for selectively locking the rear sole relative to the rear sole support and upper of the shoe. Preferably, the rear sole is shaped so that at least the rear edge of the outsole has a substantially identical profile at several, or preferably each rotated position. To allow for a plurality of rotatable positions, the shape of the outsole preferably should be symmetrical about its central axis. As shown in
While the above discussion is directed towards a rear sole that rotates or separates in its entirety, it is specifically contemplated that the same benefits of rotatable and detachable rear sole can be achieved if only a portion of the rear sole is rotatable or removable. For example, a portion of the rear sole, e.g., the center area, may remain stationary while the periphery of the ground-engaging surface or outsole rotates and/or is detachable. As another example, the rear sole may not be removable but only rotatably positionable.
In a preferred embodiment of the invention, the shoe of the present invention includes a flexible region 200 that is positioned above the rear sole and has a central portion that in its normal unflexed state is spaced upwardly from the portion of the shoe (rear sole support, or rear sole) immediately below it. The flexible region 200 is designed to provide a preselected degree of flex, cushioning, and spring, to thereby reduce or eliminate heel-center midsole compression found in conventional materials. Flexible region 200 is made of stiff, but flexible, material. Examples of materials that may be used in the manufacture of flexible member 200 include the following: graphite; fiberglass; graphite (carbon) fibers set in a resin (i.e. acrylic resin) binder; fiberglass fibers set in a resin (i.e. acrylic resin) binder; a combination of graphite (carbon) fibers and fiberglass fibers set in a resin (i.e. acrylic resin) binder; nylon; glass-filled nylon; epoxy; polypropylene; polyethylene; acrylonitrile butadiene styrene (ABS); other types of injection-molded thermoplastic engineering resins; spring steel; and stainless spring steel. The flexible region 200 can be incorporated into other elements of the shoe or can be a separate flexible member or plate.
As shown in
The flexible member may also be permanently attached to the top or bottom of the rear sole support or detachably secured to the shoe upper and removable through a pocket formed in the material (not shown) typically located on the bottom surface of the upper, or it can be exposed and removed after removing the sock liner or after lifting the rear portion of the sock liner. Alternatively, it may be totally exposed as in the case of flexible member 200 shown in
Rear sole 150 may have a concave top surface 167, as shown in FIG. 2. Therefore, when the rear sole is attached to the rear sole support, the top surface of the rear sole does not come into contact with the flexible member when the flexible member deflects within its designed range of flex. As a result, the middle of the flexible member can flex under the weight of the user without being impeded by rear sole 150. Flexible member 200 thus acts like a trampoline to provide extra spring in the user's gait in addition to minimizing, or preventing, midsole compression in the central portion of the rear sole.
A second preferred embodiment is shown in FIG. 3. In this embodiment, a rear sole 250 is identical to rear sole 150 shown in
The embodiment of
Rear sole 250 is attached to rear sole support 240 by unlocking the ends of ring 400 and positioning ring 400 around upper midsole portion 252 of the rear sole such that flange 412 engages groove 254. Ring 400 is then firmly locked onto the rear sole by mating end 416 with end 418. Flexible member 200 is inserted into the rear sole support so that it presses against upper rim 249. Ring 400, with rear sole 250 attached, is then screwed into the rear sole support by engaging threaded surface 410 of the ring with threaded surface 248 of wall 244. The ring is then screwed into the rear sole support until serrated edge 246 of wall 244 engages flange 412 of ring 400. Serrated edge 246 serves to prevent rotation of the ring during use and the top edge of ring 400 firmly supports flexible member 200.
The rear sole support sidewalls need not be continuous around the entire recess. Such sidewalls may be substantially eliminated on the lateral and medial sides of the rear sole support, or even at the rear and/or front of the rear sole support, exposing ring 400 when installed, even allowing it to protrude through the sidewalls where the openings are created. This has no effect whatsoever on the thread alignment on the inside surface of the remaining sidewalls. The advantage of doing this is that a ring with a slightly larger diameter than otherwise possible and, hence, a flexible member with a slightly larger diameter than otherwise possible may be employed.
In the embodiment shown in
The embodiment of FIG. 3 and other embodiments of the invention preferably provide a shoe that includes a flexible region or member which has its own preselected spring and cushioning characteristic and which is preferably removable and replaceable, a rear sole with its own pre-selected cushioning properties (both outsole and midsole) and which is preferably removable, replaceable, and capable of being locked in place at a plurality of preselected positions; a plurality of beveled portions on the outer surface of the rear sole which are preferably symmetrically located about its axis; and an interrelationship of the flexible member, rear sole support, and rear sole which permit the flexible member to freely flex to at least a predetermined degree. The flexible region and its characteristics, the rear sole and its characteristics, and the rear sole's relative location to the flexible region can be selectively altered, to provide in combination an optimal shoe for a given application. Also, because of the rear sole rotation and replacement permitted by the invention, typically heavy outsole material may be made thinner than on conventional athletic shoes, thus reducing the weight of the shoe. The invention also permits the weight of the shoe to be further reduced because the central portion of the midsole of the rear sole can be eliminated, since the flexible region of the shoe provides weight bearing and cushioning at this area.
Other rear sole support/rear sole combinations for securing the rear sole to the shoe and for supporting the flexible member at or below the heel region of the upper are contemplated and fall within the spirit of this invention, as described and claimed. By means of example only, some such additional configurations are disclosed in commonly-owned U.S. patent application Ser. No. 08/291,945, now U.S. Pat. No. 5,560,126, which is incorporated herein by reference.
The flexible region of the present invention is not limited to a circular shape and can be adapted to conform to the shape of the rear sole. The flexible region also need not be used only in conjunction with a detachable rear sole, but can be used with permanently attached rear soles as well.
As shown in
Flexible members 510 and 520 shown in
As shown in
The flexible members shown in
Flexible member 570, shown in
Since it is contemplated that the flexible member will be composed of graphite or other stiff, but flexible, material, it is preferable to cushion the impact of the user's heel against the flexible member during use. As shown in
The cushioning member 650 described above can be incorporated into a shoe having any of the various flexible regions disclosed in this application and drawings, as well as other shoes falling within the scope of the claims.
If cushioning member 650 is used, the shoe sock liner, which generally provides cushioning, may be thinner in the heel area or may terminate at the forward edge of cushioning member 650. If cushioning member 650 is not used, the sock liner may extend to the rear of the shoe and may be shaped to conform to the user's heel on its top surface and the flexible member on its bottom surface. Its bottom surface may also compensate for gaps formed by the flexible member. For example, the sock liner may have a concave bottom surface in the heel area to correspond to those flexible members having convex upper surfaces.
In each of the above-described embodiments, the flexible member is illustrated as a separate component of the shoe which can be removed from the shoe and replaced by a similar or different flexible member, as desired. In each of the embodiments the central portion of the flexible member is raised relative to its outer perimeter so that when placed in the shoe, the interior portion in its normal state does not touch the rear sole support and/or rear sole. As a result, the interior of the flexible member will flex in response to the user's stride without first, if ever, contacting the rear sole support and/or rear sole. Such flexible member, therefore, can be used with rear soles that have a flat upper surface, as well as those that have a concave upper surface. The relative shape and positioning of the flexible member and the adjacent rear sole support or rear sole can be designed to provide the optimum flex, stiffness, and spring characteristics. However, each of the above-described flexible members may be made integral with the rear sole support, which not only decreases the number of loose parts and increases the efficiency of the manufacturing process, but also further limits the lateral displacement of the periphery of the flexible member upon deflection, potentially creating more spring in the center and/or permitting the use of thinner and/or lighter weight material.
As shown in
The flexible region may be incorporated into other rear sole support embodiments as well. As an alternative to using arch extension 180, rear sole support 440 shown in
In another embodiment, rear sole support 460, as shown in
As shown in
Securing member 750 is simply substituted for securing member 400 and flexible member 200 shown in
As shown in
The shape of the rear sole 828 can be circular, polygonal, elliptical, “sand-dollar”, elongated “sand-dollar” or otherwise. Preferably, the rear sole is shaped so that the rear edge of the ground-engaging surface 830 has a substantially identical profile at each rotated position. To allow for a plurality of rotatable positions, the shape of the ground-engaging surface 830 preferably should be symmetrical about at least one axis. The ground-engaging surface 830 can be planar or non-planar. Preferably, the ground-engaging surface, particularly on running shoe models, includes one or more tapered or beveled edges 848, as shown in
Further embodiments are disclosed that show the various ways of attaching the rear sole to the heel support in accordance with the invention. The general features of the embodiment of
Another embodiment of the present invention is shown in
The rear sole 950 includes a rubber ground-engaging surface 954 containing, in this embodiment, three beveled segments or edges 956. As shown in
The upper midsole portion 964 includes a spiral groove 968, as shown in
It should be noted that the configuration of the midsole 958, i.e., the upper midsole portion having a diameter equal to or slightly larger than that of the recess defined by the rim and a lower midsole portion having a diameter substantially equal to the diameter defined by the circular wall 944, further eliminates any vertical gapping problems from occurring between the wall of the heel support and the peripheral surface of the rear sole.
To assist in removing the rear sole from the heel support, the two windows 974, 976 (
It is not necessary to include a spiral groove in the rear sole for attaching and removing the rear sole from the heel support. As shown in
As shown in
Another embodiment for attaching the graphite insert is shown in FIG. 33. In this embodiment, the graphite insert 1000 is inserted through the bottom of the heel support 1040 so that the periphery of the graphite insert presses against the lower surface of an upper rim 1049 of the heel support. A plastic ring 1010 is also inserted in the recess between the graphite insert and the rim 1048. Such ring 1010 is flexible enough to allow it to be inserted into the heel support. The ring supports the periphery of the lower surface of the graphite insert. The rear sole 1050 is a screw-in type identical to the rear sole 950 shown in
As shown in
Alternatively, the rim 1048 of the heel support and the graphite insert 1000 can be “gear-shaped”, as shown in
If additional cushioning is desired, the rear sole can be modified as shown in
As shown in
The vertical curve of the exterior surface of the outer-most curved wall converges in a direction away from the vertical central axis and forms a convex wall. The vertical curve of the interior surface of the outer-most curved wall converges in a direction away from the vertical central axis and forms a convex wall. As shown in
The inner-most curved sidewall (i.e., the sidewall closest to the vertical central axis of cushion 1170) is curved like the outer-most curved sidewall except that the interior and exterior surfaces converge toward the vertical central axis.
When cushion 1170 is assembled within void 1152 of rear sole 1150 (FIG. 37), the rear portions of cushion 1170, the ground-engaging layer of rear sole 1150, and the plate each have a semi-circular curved portion that is shaped substantially the same.
The graphite insert is not limited to a circular graphite insert and can be adapted to conform to the shape of the rear sole. In addition, the graphite insert may be concave or convex in shape and may include cut-out portions such as those in the graphite insert 1000 shown in
As shown in
Another embodiment is shown in
As shown in
The graphite insert 1000 and the ring 1210 are inserted into the recess of the heel support and the rear sole 1250 is press-fitted into the recess so that the knobs 1258 of the rear sole engage the openings 1248 formed in the wall 1244 of the heel support. Since the rim of the heel support is bent, the portion of the rear sole adjacent the bent rim will also be bent upwardly to effectively create a beveled edge on the ground-engaging surface. The voids 1259 created in the rear sole allow the rear sole easily to be bent to conform to the shape of the bent rim. Wedges 1260 may be inserted into the voids of the rear sole that are not adjacent to the bent rim to provide lateral support.
It will be apparent to those skilled in the art that various modifications and variations can be made in the system of the present invention without departing from the scope or spirit of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the claims and their equivalents.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US48682||Jul 11, 1865||Improved boot-heel|
|US221592||Sep 9, 1879||Nov 11, 1879||Improvement in heels for boots and shoes|
|US357062||Feb 1, 1887||Spring-heel for boots or shoes|
|US485813||Nov 8, 1892||Boot or shoe|
|US537492||Jan 31, 1895||Apr 16, 1895||Henry t|
|US652887||Jul 1, 1897||Jul 3, 1900||George F Butterfield||Heel for boots or shoes.|
|US674636||Sep 13, 1900||May 21, 1901||James Priestman||Heel-cushion.|
|US789089||May 4, 1904||May 2, 1905||William N Harper||Reversible heel attachment.|
|US818861||Mar 21, 1904||Apr 24, 1906||Frank Brahs||Shoe-sole fastening.|
|US990458||Jan 27, 1908||Apr 25, 1911||William M Scholl||Instep-arch support.|
|US1046815||Jul 8, 1912||Dec 10, 1912||Joseph Lavoie||Detachable shoe-heel.|
|US1062338||Feb 15, 1912||May 20, 1913||Patrick Kane||Detachable boot or shoe heel.|
|US1088328||Sep 3, 1912||Feb 24, 1914||Sporting-shoe.|
|US1112635||Oct 2, 1913||Oct 6, 1914||Victor May||Resilient heel.|
|US1316505||Dec 14, 1917||Sep 16, 1919||Thozlas j|
|US1318247||Jul 2, 1918||Oct 7, 1919||Detachable shoe-sole|
|US1346841||May 7, 1919||Jul 20, 1920||Padden Robert W||Shoe-heel|
|US1366601||Oct 11, 1919||Jan 25, 1921||Joseph Sellars William||Heel for footwear|
|US1371339||Jan 6, 1920||Mar 15, 1921||Bonnie Walters||Detachable shoe-heel pad|
|US1410064||Mar 5, 1921||Mar 21, 1922||Hunt Nannie K||Sole and heel frame|
|US1439757||Nov 18, 1921||Dec 26, 1922||Frank Redman||Shoe heel|
|US1439758||Mar 14, 1922||Dec 26, 1922||Frank Redman||Shoe heel|
|US1444677||Nov 22, 1920||Feb 6, 1923||Fischer George F||Heel|
|US1458257||Apr 18, 1922||Jun 12, 1923||Melle Jean Van||Rubber heel|
|US1479773||Jul 2, 1923||Jan 1, 1924||James Craig||Detachable heel|
|US1501765||Aug 24, 1921||Jul 15, 1924||Herman A Freese||Arch support|
|US1516384||Oct 1, 1923||Nov 18, 1924||Kamada Richard R||Heel for shoes|
|US1542174||Aug 20, 1923||Jun 16, 1925||Louis Robidoux||Detachable half sole and heel|
|US1611024||Nov 6, 1924||Dec 14, 1926||Lorenzo Falcetta||Rubber heel and sole|
|US1625048||Mar 13, 1926||Apr 19, 1927||Nock John R||Spring heel|
|US1721714||Sep 26, 1927||Jul 23, 1929||Benjamin Ross||Heel cushion for shoes|
|US1811641||Jan 2, 1930||Jun 23, 1931||Marcelle Isaac J||Arch correcting insert for shoes|
|US2002087||Jul 17, 1931||May 21, 1935||Esterson Jack F||Shoe heel|
|US2003646||Aug 23, 1934||Jun 4, 1935||De Blasio Michele||Foot aerating device|
|US2078311||Jan 6, 1936||Apr 27, 1937||Hamilton Boag Robert||Cushion rubber heel|
|US2119807||Jan 7, 1936||Jun 7, 1938||Farley Myron M||Heel and arch cushion and support|
|US2148974||Aug 1, 1938||Feb 28, 1939||Wysowski John||Arch support|
|US2208260||Jul 31, 1939||Jul 16, 1940||Chester W Brown||Reversible heel|
|US2288168||May 20, 1941||Jun 30, 1942||Leu Edward E||Heel|
|US2300635||Nov 16, 1940||Nov 3, 1942||Henry Shepherd||Heel|
|US2348300||Apr 3, 1943||May 9, 1944||Calvin C Klaus||Shoe|
|US2374954||Jun 3, 1944||May 1, 1945||Erasmo Pipitone||Shoe-heel construction|
|US2403442||Jan 1, 1945||Jul 9, 1946||Calvin C Klaus||Shoe|
|US2446627||Mar 19, 1946||Aug 10, 1948||Edmund Bier||Heelpiece for boots and shoes|
|US2447603||Sep 27, 1946||Aug 24, 1948||Snyder Ballard F||Shoe|
|US2464251||Oct 24, 1946||Mar 15, 1949||Moody Howard H||Rubber heel|
|US2491280||Feb 18, 1946||Dec 13, 1949||Roth Rauh & Heckel Inc||Sock lining|
|US2500302||Aug 27, 1948||Mar 14, 1950||Vicente Francisco||Shoe heel|
|US2508318||Jan 31, 1949||May 16, 1950||George Wallach||Resilient heel for shoes|
|US2540449 *||Oct 5, 1946||Feb 6, 1951||Melville Kaufmann||Ramp heel|
|US2556842||Aug 24, 1948||Jun 12, 1951||Thomas Gilmour||Interchangeable shoe heels|
|US2607134||May 27, 1949||Aug 19, 1952||Claude Harmon||Calk for footwear|
|US2628439||May 24, 1951||Feb 17, 1953||Raymond Rochlin||Rotatable and reversible heel element|
|US2707341||Jul 2, 1954||May 3, 1955||Romano Frank T||Shoes with convertible heels|
|US2745197||Sep 9, 1954||May 15, 1956||Danielson Mfg Company||Mid-sole construction|
|US2806302||Mar 15, 1957||Sep 17, 1957||Sharpe Walter A||Replaceable heel structure|
|US2998661||Aug 11, 1958||Sep 5, 1961||York E Langton||Cushioned shoe heel|
|US3083478||Sep 7, 1961||Apr 2, 1963||Rakus Jozef M||Shoe heel and attachment means therefor|
|US3085359||Dec 30, 1958||Apr 16, 1963||Burndy Corp||Rotatable heel|
|US3087265||May 6, 1960||Apr 30, 1963||William Mckinley||Interchangeable turnable heels|
|US3169327||Mar 20, 1964||Feb 16, 1965||Fukuoka Tatuo||Driver's safety shoe|
|US3171218||Nov 28, 1962||Mar 2, 1965||Luis D Urbano||Detachable heels|
|US3208163||Oct 16, 1961||Sep 28, 1965||Ernest Rubens Harry||Shoe heel with circular wear element|
|US3237321||Mar 24, 1965||Mar 1, 1966||William Mckinley||Turnable shoe heels|
|US3271885||Apr 22, 1964||Sep 13, 1966||Mcauliffe Timothy L||Heel for athletic shoe|
|US3318025||May 20, 1963||May 9, 1967||Barriga Antelo Rodolfo||Sole and heel structure for shoes|
|US3455038||Feb 23, 1968||Jul 15, 1969||Kasdan Nathan||Renewable heel for footwear|
|US3478447||May 27, 1968||Nov 18, 1969||Gillead J Foster||Shoe heel with rotatable lift|
|US3514879||Nov 6, 1967||Jun 2, 1970||Michele Frattallone||Heel having interchangeable support portion|
|US3566489||Jul 29, 1969||Mar 2, 1971||Robert C Morley||Replaceable spike for shoes|
|US3593436||May 29, 1969||Jul 20, 1971||Hyde Athletic Ind Inc||Athletic shoe sole|
|US3646497||Jan 15, 1970||Feb 29, 1972||Gillikin Bobby G||Shoe with interchangeable heels|
|US3664041||Feb 9, 1970||May 23, 1972||Frattallone Michele||Heel with ornamental mask|
|US3775874||Dec 22, 1971||Dec 4, 1973||Nouvelle Soc Bruey Sa||Sports shoe spikes|
|US3782010||Oct 2, 1970||Jan 1, 1974||Frattallone M||Detachable heel for shoes|
|US3804099||Mar 5, 1973||Apr 16, 1974||Hall T||Orthopedic heel|
|US3928881||Jul 5, 1974||Dec 30, 1975||Dassler Adolf||Method and mould for the manufacture of a plastic sole for shoes|
|US3988840||May 7, 1975||Nov 2, 1976||Hyde Athletic Industries, Inc.||Sole construction|
|US4043058||May 21, 1976||Aug 23, 1977||Brs, Inc.||Athletic training shoe having foam core and apertured sole layers|
|US4062132||Sep 8, 1976||Dec 13, 1977||Chester Klimaszewski||Footwear having replaceable heel and sole|
|US4067123||Jan 31, 1977||Jan 10, 1978||Hyde Athletic Industries, Inc.||Sole construction|
|US4098011||Apr 27, 1977||Jul 4, 1978||Brs, Inc.||Cleated sole for athletic shoe|
|US4102061||Mar 2, 1977||Jul 25, 1978||Karhu-Titan Oy||Shoe sole structure|
|US4168585||Apr 10, 1978||Sep 25, 1979||Gleichner Eleanor R||Heel cushion|
|US4198037||Dec 19, 1977||Apr 15, 1980||Miner Enterprises, Inc.||Method of making polyester elastomer compression spring and resulting product|
|US4214384||Oct 18, 1978||Jul 29, 1980||Ricardo Gonzalez R||Replaceable heel construction for shoes|
|US4224749||Dec 26, 1978||Sep 30, 1980||Diaz Cano Juan A||Heels for footwear|
|US4224750||May 10, 1976||Sep 30, 1980||Delport Marthienes J||Foot-wear|
|US4258480||Aug 4, 1978||Mar 31, 1981||Famolare, Inc.||Running shoe|
|US4262434||Jul 30, 1979||Apr 21, 1981||Michelotti Paul E||Running shoe with replaceable tread elements|
|US4263728||Jan 31, 1979||Apr 28, 1981||Frank Frecentese||Jogging shoe with adjustable shock absorbing system for the heel impact surface thereof|
|US4267650||Jul 30, 1979||May 19, 1981||Peter Bauer||Shoe with removable outsole|
|US4288929||Jan 15, 1980||Sep 15, 1981||New Balance Athletic Shoe, Inc.||Motion control device for athletic shoe|
|US4317293||Feb 22, 1980||Mar 2, 1982||Rolf Sigle||Foot-supporting insole|
|US4320588||Aug 2, 1979||Mar 23, 1982||Giulio Sottolana||Insole, in particular for ladies' shoes|
|US4322894||Apr 18, 1980||Apr 6, 1982||Dykes William E||Surfing footwear|
|US4322895||Dec 10, 1979||Apr 6, 1982||Stan Hockerson||Stabilized athletic shoe|
|US4342158||Jun 19, 1980||Aug 3, 1982||Mcmahon Thomas A||Biomechanically tuned shoe construction|
|US4363177||Jun 2, 1980||Dec 14, 1982||Boros Leslie A||Style convertible footwear|
|US4372058||Sep 10, 1980||Feb 8, 1983||Stubblefield Jerry D||Shoe sole construction|
|US4598487 *||Mar 14, 1984||Jul 8, 1986||Colgate-Palmolive Company||Athletic shoes for sports-oriented activities|
|US4843741 *||Nov 23, 1988||Jul 4, 1989||Autry Industries, Inc.||Custom insert with a reinforced heel portion|
|US4845863 *||Sep 16, 1988||Jul 11, 1989||Autry Industries, Inc.||Shoe having transparent window for viewing cushion elements|
|US4878300 *||Jul 15, 1988||Nov 7, 1989||Tretorn Ab||Athletic shoe|
|US5005300 *||Mar 7, 1990||Apr 9, 1991||Reebok International Ltd.||Tubular cushioning system for shoes|
|US5052130 *||Apr 18, 1990||Oct 1, 1991||Wolverine World Wide, Inc.||Spring plate shoe|
|US5185943 *||Sep 20, 1991||Feb 16, 1993||Avia Group International, Inc.||Athletic shoe having an insert member in the outsole|
|US5191727 *||Aug 8, 1991||Mar 9, 1993||Wolverine World Wide, Inc.||Propulsion plate hydrodynamic footwear|
|US5319866 *||Aug 21, 1991||Jun 14, 1994||Reebok International Ltd.||Composite arch member|
|US5363570 *||Jun 6, 1994||Nov 15, 1994||Converse Inc.||Shoe sole with a cushioning fluid filled bladder and a clip holding the bladder and providing enhanced lateral and medial stability|
|US5560126 *||Aug 17, 1994||Oct 1, 1996||Akeva, L.L.C.||Athletic shoe with improved sole|
|US5575088 *||May 1, 1995||Nov 19, 1996||Converse Inc.||Shoe sole with reactive energy fluid filled toroid apparatus|
|US5979078 *||Oct 14, 1997||Nov 9, 1999||Nike, Inc.||Cushioning device for a footwear sole and method for making the same|
|1||"New Footwear Concepts" by E.I. du Pont de Nemours & Co. (1988).|
|2||"TECHNOLOGY: Cushion of steel puts the spring in high heels"; New Scientist; vol. 133, No. 1813; Mar. 21, 1992; pp. 1 and 22.|
|3||Affidavit of Jerry Turner dated Dec. 10, 2004; Akeva, L.L.C. v. Adidas America, Inc.; Civil Action No. 1:03-cv-01207.|
|4||AVIA "Heel Tension Member" technical drawings dated Jan. 9, 1987.|
|5||AVIA "Ultra Running" concepts dated Dec. 18, 1986.|
|6||AVIA 1989 Catalog excerpt.|
|7||AVIA ARC Shoe (photo; bottom view with wave plate); sold in 1989.|
|8||AVIA ARC Shoe (photo; bottom view); sold in 1989.|
|9||AVIA ARC Shoe (photo; cross section of heel with wave plate); sold in 1989.|
|10||AVIA ARC Shoe (photo; cross section of heel); sold in 1989.|
|11||AVIA Fall 1991 Footwear Catalog.|
|12||Declaration of Jerry D. Subblefield dated Dec. 4, 2002.|
|13||Declaration of Takaya Kimura (Civil Action File No. 1:00 CV 00978).|
|14||Drawings of Mizuno shoe with plate and opening in bottom of shoe dated Jan. 3, 1991.|
|15||Etonic Spring 1996 Footwear catalogue.|
|16||Etonic Spring Sport Shoe Catalog; p. 4; (1993).|
|17||Expert Declaration of: Jerry D. Stubblefield dated Jul. 30, 2002.|
|18||Expert Declaration of: Jerry D. Stubblefield dated Oct. 7, 2002.|
|19||International Search Report for International Application PCT/US94/09001 dated Jan. 2, 1995.|
|20||Mizuno 1985 Sports Shoe catalog excerpts (MIZJP 02524-02531).|
|21||Mizuno 1986 Sports Shoe catalog excerpts (MIZJP 02532-02537).|
|22||Mizuno 1987 Athletic Footwear catalog excerpts (MIZJP 02538-02546).|
|23||Mizuno 1988 Athletic Footwear catalog excerpts (MIZJP 02547-02549).|
|24||Mizuno 1991 All Line-Up catalog excerpts (MIZJP 02550-02556).|
|25||Mizuno 1992 Run-Bird All Line-Up catalog excerpts (MIZJP 02557-02559).|
|26||Mizuno 1993 All-Line-Up catalog excerpts (MIZJP 02560-02564).|
|27||Mizuno Sport Shoe Catalog (1986).|
|28||Report of Keith R. Williams with Exhibits A-G, dated Sep. 8, 2004.|
|29||Runner's World 1989 Spring Shoe Survey and ETONIC and AVIA advertisements (MIZ 135893-MIZ 135902).|
|30||TURNTEC 1993 Brochure (TURNTEC 1993).|
|31||TURNTEC 1993 Brochure (TURNTEC 93).|
|32||TURNTEC advertisement for "The Predator".|
|33||TURNTEC Brochure; The New State of the Art; American Sporting Goods Corp.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7752775||Sep 11, 2006||Jul 13, 2010||Lyden Robert M||Footwear with removable lasting board and cleats|
|US7770306||Aug 23, 2007||Aug 10, 2010||Lyden Robert M||Custom article of footwear|
|US8171656 *||Jun 28, 2006||May 8, 2012||Karhu Sporting Goods Oy||Sole structure of a sports shoe|
|US8181364||Feb 6, 2009||May 22, 2012||Nike, Inc.||Article of footwear with heel cushioning system|
|US8209883||Jul 8, 2010||Jul 3, 2012||Robert Michael Lyden||Custom article of footwear and method of making the same|
|US8572869||Apr 5, 2012||Nov 5, 2013||Nike, Inc.||Article of footwear with heel cushioning system|
|US20080052960 *||May 18, 2006||Mar 6, 2008||Manon Belley||Footwear construction|
|US20080243135 *||Jan 6, 2008||Oct 2, 2008||Robinson Randolph C||Driver-Fixator System, Method, and Apparatus|
|US20090019730 *||Jun 28, 2006||Jan 22, 2009||Karhu Sporting Goods Oy||Sole structure of a sports shoe|
|US20090241375 *||Jun 1, 2009||Oct 1, 2009||Akeva L.L.C.||Athletic shoe|
|US20100223811 *||Sep 9, 2010||Meschan David F||Athletic shoe with improved sole|
|USD668854||Nov 5, 2010||Oct 16, 2012||Wolverine World Wide, Inc.||Footwear sole|
|U.S. Classification||36/25.00R, 36/91, 36/31|
|International Classification||A43B21/42, A43B5/00, A43B21/433, A43B21/36, A43B21/52, A43B13/26, A43B21/32, A43B21/26|
|Cooperative Classification||A43B13/26, A43B21/26, A43B3/0042, A43B7/142, A43B7/144, A43B21/52, A43B21/36, A43B5/00, A43B21/433, A43D999/00|
|European Classification||A43B7/14A20A, A43B7/14A20H, A43D999/00, A43B3/00S10, A43B21/433, A43B21/52, A43B21/26, A43B21/36, A43B13/26, A43B5/00|
|Mar 2, 2005||AS||Assignment|
Owner name: AKEVA L.L.C., NORTH CAROLINA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MESCHAN, DAVID F.;REEL/FRAME:015816/0788
Effective date: 19961216
|Sep 19, 2006||CC||Certificate of correction|
|Dec 14, 2009||REMI||Maintenance fee reminder mailed|
|May 10, 2010||PRDP||Patent reinstated due to the acceptance of a late maintenance fee|
Effective date: 20100511
|May 11, 2010||FPAY||Fee payment|
Year of fee payment: 4
|May 11, 2010||SULP||Surcharge for late payment|
|Dec 20, 2013||REMI||Maintenance fee reminder mailed|
|Apr 15, 2014||SULP||Surcharge for late payment|
Year of fee payment: 7
|Apr 15, 2014||FPAY||Fee payment|
Year of fee payment: 8